Valve-spring lifter



Jan. 8 1924.

L. M. WOOD VALVE SPRING LIFTER Filed Feb. 28. 1922 WITNESSES INVENTOR I LouisMW fl wm 9% ATTORNEYS Patented Jan. 8, 1924.

LOUISM. Wool), or NEW'YORK, 1v; Y, AssIGnon; BY iensnn ssignments; To green;

o-MULTIPLE VALVE nrr'rna conroenrron .1

VALVE-SPRING LIFTER:

Application filed February 28;:1922. semi Nb. 539. 993;

T0 aZZ whom it may concern:

Be it'lmown that I, Looms M. WVoon a citizen of the United States, and a resident of the city of New York borough of Manhattan, in the county and State-.-of New York, have invented a-ne'w and Improved Valve SpringLifter, of which the following is a fulh-clear, and exact description.

This invention has: relation to devices for lifting'or compressing the valve springs of internal combnst-ion motors, and contemplates as its general object to provide improved m e'ans for-1i{ti-n 9;-valve springs and "facilitat ing the operation of removing and grinding the valves: I

A further ob j eet ofthe present invention is to provide eflici'ent practicable, rela-' tively, inexpensive; and quick operating device forsimultaneously compressing; a multiplicity-of springs whereb-ythe valves and retaining: springs may be*readily removed, and for retaining the'springs under compressio'n until the grindii'ig operation is completed and 'the'valves and pins reassembledir z Furthermore the invention contemplates a device of the characten described: which includes means automatically operable" upon compression of the; valve" springs ':to retain said springs compressed whereby the operation of removing theretainingpins; re moving and inserting the-valves and rein+ serting' the retaining pins may@ beaccom plished' while the springs are: retained in their'conti'pressed"condition: A furtherobjeotof' this invention is to provide a multiplevalve spring lifter 'co'mprising-5alifting: member co-acting with the Y valve sp'ring 'and' wliereinysiicli member is positively giiided-with relation to thevalves in an: mproved and efficient manner.

A further ,ObJeet ofztlns invention is: to

irovide a valve su'rin lifter in'cludin r; a

the-might is reserved-to embodimentsother than those actually illustrated herein: to the fullaextent" indicated by the general mean in which :the' claims are' extio'nal View through a motor taken" approximately onthe-line 11' or Fig. 2iand' il lnstratingthe valve springlifter "in: operaf tive relation thereto.

Fig; 2 i'is a' sectional plan vieiv there'of taken approximately on the line 2 2 of Fig. 1. p

Fig. 3 is a faceview of: the spring=engaging and? retaining device removed. 1'

Referringto the drawings wherein I" have illustrated preferred form of my invention it will be-1 seen thatthe motor block Act the engine is providedfwith'the isual valve, spring-- chamber B which is normally closedbyr a cover plate,unot shown. The cover plate is normally retained in'place by means ofeithera'zlag-screw C as "illustrated, or astnd bolt. Thevalves D areprovided with Valve stems Elwhich extend into the .valve spring chamber 13 and are" provided with the usual: removable retaining pins F. The pinsnF ooac'twith springseats-Ginto which the lowerendsfoit' the several valve springs H are seated. Theiopposi-te endsofthe springs engage on upper j Wall of the" valve spring chamber, the: springs normally cans ingztheseating' off tl1=YtlV6S- The lower wall of the chamber Bisprovided w'ithupstand ing valve lifter guide sleeves I through whi'chthe valve liftersJ' are movable when actuated by-the' cams fonlifting thevalves against the action Of thes r-ing:

It will. be noted that the valve spring chamber B is located within} a housinge casing comprising ajr ear' wall and" for wardly extending end walls- M the latter adapted to form a guide forthe lifter bar 1 hereinafter described;

- Thelpi'es ent valve spring lift'er-- or V 00111- pressingdevice" comprises a: liftin'gba-r or member 10 and a lifting lever, 1-1. 'Phe 7190 v,

liftin gl m'einber: l0 isjprovide'd on" its*in'n'e1- Sltle with a plurality of? valvespr ng seat engaging fonks or members 13 and provlded at its opposite side witlii depending legs 1:45

pivotally' connected thereto for transverse swingin movements Each leg is pr'ovidedf with" a'i pair of inwardly projecting-studs I5 and: 116 I with: which leaf spring I7 is en} gageable: for respectively efi ee'ting inward onoutward lateral: swinging 0f the-"legs "The valv spring 7 lower extremity of each leg is notched or cutaway as at 18 for a purpose to be here- "inafter set forth. The bar 10 is provided with one or a number of vertically disposed the outer-end of the lag screw or bolt C "-may be removed for the purpose of removing the cover plate, and the'bar 1O placed in position with the bolt C extending through the guide slot 19. The nut 12 is then screwed on to the end. of the bolt 0, the forks 13 extending under the valve spring seat G and embracing the valve stem E. The leaf springs 17 are engaged with the outer studs 16 of each leg and the prongs 20 of the lever are inserted into the chamber to cause the opposite extremities of the pins 21 to engage behind the valve lifter guide sleeves I. An. upward movement of the outer end of the lever 11 will effect the engagement of the prongs with the under side of the bar therebylifting thebar and compressing and lifting the valve springs H. It will be noted that the lifting bar 10 in this instance is provided with projecting portions which overlap or engage the front edges of the end walls M of the housing and hence the lifting bar by virtue of these end guide portions is guided thereby in a vertical plane,-thus causing the member 13 to be positively shifted in a vertical'plane. The guide slot 19 centers the lifting members 13 with relation to the valve springretainers G, and acts as agui de for restricting any material endwise movement of the bar 10 without,at the same time causing any pressure to be exerted'upon the bolt C. lVhen the bar or plate 10 has been lifted a sufficient distance to bring the notched or cut-away lower extremities of the legs in registration with the upper edge of the lower wall of the valve spring chamber B, the springs 17 will swing the legs or looking members 14 inwardly into engagement with said edge, thereby retaining the springs H under compression. The lifting lever 11. may then be removed and the operator may readily re-' move the retaining pins F and the valves D; 'After the grinding operation the valves are reinserted and the pins F replaced. The lever 11 is again placed in position and the springs 17 are then engaged with the inner studsj whereby an initial lift of the lever will cause said springs to swing the legs 14 outwardly,thereby unlocking the lifting bar. The expansion of the valve springs will lower the lifting bar and reseat the valve spring seats on the retaining pins F.

' It will be observed that as the prongs of the liftinglever 11 engage the under side. of the bar 10 and elevate the same, the latter slides over the upper edges of the prongs. 1

Thus, the action of elevating the bar 10 through the lever 11 is a cam action, and the upper edges or surfaces of pron 's or proections 20 act as cam surfaces. s a result of this cam action the power necessary to compress the springs is considerably reduced.

I claim r I 1. A valve spring lifter comprising a bar adapted to engage the under sides of a plurality of valve spring seats, means for lifting said bar and compressing the sprin and resilient locking means carried by said bar for retaining the same in lifted position and the springs under compression.

2. A valve spring-lifter comprising a lift- 1 ing bar adapted to be detachably associated with a motor, means engageable with the motor and the under side of said bar for ing a pair of pivoted supportinglegs, and

means for swinging the same.

4. A valve spring lifter comprising a lifting bar adapted to be detachably associated with a motor, a plurality of valve spring seat engaging members project-ing therefrom, looking members pivoted to said bar, res1l1ent means engaging said. members for swinging the same, and means for lifting the bar tocompress the valve springs.

5. In a motor having a valve spring chamber and a cover pl'ateretaining bolt,

means for lifting and retaining the valve springs under compression and comprising a bar having a guide slot embracing said retaining bolt, means carried by said bar and'adapted to engage the. under sides of a plurality of valve spring seats, means for elevating said bar and automatic means carried'by the bar for supporting and re tainingthe bar in elevated position. 6. A valve spring lifter adapted to b used with a motor having a valve spring housing and comprising a. lifting member provided at opposite ends thereof with guide portions adapted to overlap the housing, when the lifting member is located in opera tive position, and means engageablewith the motor and underside of said member "tion of a lifting bar having means for opcrating against a plurality of valve springs, lever means for elevating said bar, and means carried by said bar independently of said last means for maintaining the same in elevated position. i

9. In a valve spring lifter the combination of a lifting member having means extending beneath three or more valve springs for operating thereagainst, means engageable with the motor and said member for lifting the same, and means carried by said member for guiding the same against displacement relatively to the valvev springs during operation. 7

10. A valve spring lifter for a motor having a valve spring housing, a plurality of valves and springs and a housing stud or bolt and com risin means for liftin said springs under tension, said means comprising a member having a guide slot adapted to embrace said bolt.

11. A valve spring lifter for a motor having a valve spring housing, a plurality of valves and springs and a housing stud or bolt, and comprising means for lifting said springs under tension, said means compris ing a member having a guide slot adapted to embrace said bolt, and said member engaging said housing in front of the valves and guided thereby.

12. A valve spring lifter for a motor having a valve spring housing, a plurality of valves and springs and a housing stud or bolt, and comprising means for lifting said springs under tension, said means comprising a member having a guide slot adapted to embrace said bolt, and cam means for operating said member.

13. In a valve spring lifter, a shiftable lifting member-having means for operating against three or more valve springs, means for shifting the same to simultaneously com springs, and shiftable self-locking means extending beneath'said member for maintaining the same in shifted'position. 7

15. In a valve spring lifter the combination of a shiftable lifting member for a plurality of valve springs, said member in operative position having a' vertically ex- 7 tending guide slot and members.

16. In a valve spring lifter'the combination of a vertically shiftable lifting member for a plurality of valve springs, said member having a vertical guide slot and spring controlled locking supports. 1 V

17 In a valve spring lifter the combination of a member having means projecting therefrom for operating against a plurality of valve springs, and means for lifting said depending locking member, said member having a pair of guide means cooperating with the engine, one for guiding the member against transverse movement and the other for guiding the member against endwise movement.

18. In a valve spring lifter, the combination of a shiftable lifting member having means for operating simultaneously against three or. more valve springs, and lever means slidingly engaging the underside thereof for liftin said member. 7 s v 19. n a' valve spring lifter, the combina tion of a shiftable lifting member extending lengthwise in front ofthree or more valve springs and also beneath the same for operating thereagainst, and means 'supported independently thereof for lifting said member by cam action. i p s V 20. In a valve spring lifter, the combina tion of a shiftable lifting member extending lengthwise in front of three or more valve springs and also beneath the same for operating thereagainst, and means slidingly engaging the'underside of said member for liftingthe same. i

21. In a valve spring lifter, the combination of a shiftable lifting member extending lengthwise in front of three or more valve springs and also beneath the same forv o eratin therea ainst. and means en a b b 1 b I:

able with the motor and underside of said member and when operated having a sliding engagement with one thereof for elevating said member. 7

22. A valve spring lifter comprising l1fting meanshaving means adapted to extend beneath three or more valve springs for 0 eratin' therea ainst when said liftin means is elevated, and means shiftable beneath' said lifting means for maintaining the same in elevated posit on and allof said valve springs under compression.

LOUIS M. Wool). 

